Scuffler for agricultural purposes



Nov. 27, 1923. 1,475,376

A. R. FIRKINS SCUFFLER' FOR AGRICULTURAL PURPOSES Filed May 20, 1922- A RTHUR R.F/Rifl/V5,

IN VENTOR BY wsw.

ATTG RNE Y.

nine,

Patented Nov. 27,1923.

UNITED Ta ARTHUR ROBERT rinKINs, on TENBUBY, ENGLAND.

SGUFFLER FOB AGRICULTURAL EUREO SES.

Application filed May 20,

To all whom it may concern Be it known that I, ARTHUR. ROBERT FIR- a subject of the King of Great Britain, residing at The Moor, E'ardiston, Tenbury, in the county of lVor'cester, Englanchhave invented a new and useful Improvement in Scufflers for Agricultural Purposes, of which the following is a specification.

This invention has reference to improvements connected with scuftlers or cultivators for agriculturalpurposes, and has for its object to apply to such agricultural implements an over-balanced cam lifting device substantially of a character which has previously been employed in connection with plows. My camliftingdevice differs in construction and in its particular method of control from that of the device referred to which has been applied to plows, harrows and other implements, and no claim, per se is made in the present invention to this cam lifting device; the present invention residing in this combination of the said cam lifting device with scufflers or cultivators.

The present invention comprises the combination with scuiflers or cultivators of an overbalanced cam lifting device, said device being controlled in its two alternative positions by means of a spring controlled lever and bolt said bolt being adapted to main tain the cam lifting device in one or other of its two alternative positions. In the one position the points of the scuflies or cultivators are in contact with the soil, and in the other position the tilling implement is raised clear of the soil.

My invention will now be described in conjunction with the accompanying sheet of drawings which illustrate its application to a scuflier, similar reference numerals indicating similar parts in the several views Fig. 1 is a part sectional side elevation of a scuffler adapted for attachment to a tractor or other propelling or drawing means, the points of the scuflies being in contact with the soil.

Fig. 2 is a similar elevation to that of Fig. 1, but illustrating the alternative position of the machine the scuffies being raised above the soil.

Fig. 3 is a plan of the complete scuflier, the part sectional elevations Fig. 1 and Fig. 2, being taken on the line 0c0c of Fig. 3. v

Fig. 4 is a part sectional elevation to an enlarged scale of part of the mechanism seen in Fig. 1 illustrating in part the means in Fig. 1, the

1922. semi No. 5e2,51o.

whereby the bolt maintains the over-balanced cam lifting device in position.

Thescuftler as illustrated in Figs. 1, to 4; of the. accompanying drawings compriscfa substantially; rectangular frame 5 the front bar 6 ofwhich may form a drawbar. Mounted in bearing blocks 7. side bars'of the frame 5 by means of rec.- tangular spindles 8- are .wheels' 9v which forms'the forward support for the scuffler. Mounted in the rearward half of the frame by means of suitablebrackets in the ordinary manner is a plurality of scufiies or tines 10. I

Disposed along the longitudinal.centreline of the framework is the overbalanced cam lifting device 11 which is rotatably mounted on the pin 12 mounted in the bars 13-.forming part ofthe frame of the scutlier. This cam i i a e i e l l s a lo de f'Q W g ed section 22 the periphery of this section being formed with projecting teeth 14; in addition the periphery of the cam is also formed with a skid 15. Projecting from the side of the cam lifting device 11 and adjacent to the edge thereof are two pins 16 and 17 which are adapted to contact with the positioning bolt 18 to determine the position of the cam lifting device, and therefore of the scuflles or tines 10, in a manner which will be more particularly explained hereinafter. The bolt 18 is mounted in brackets 19 and 19 secured to the bars 13 of the framework, the forward end of the bolt 18 being pivotally connected to a lever 20 which is fulcrumed at its lower end in the projecting arm 19 of the bracket 19. Connected to the lever 20 at a point midway in its length is a coil spring 21 which is connected at its other end to one of the bars 13 of the framework. The upper end of the lever 20 is eyed and is adapted for attachment to a flexible cord, wire or other connection which is under the control of the driver of the machine.

The operation of the device is clearly seen by a comparison of Figs. 1 and 2 of the drawingsand by reference to the enlarged detail Fig; 1. When the scuffles or tines 10 attached to the are in tilling contact with the soil as seen cam lifting device occupies the position shown, that is, the pin 16 is incontact with'the 16, whereby the loaded or overweighted section 22 of the cam is prevented from falling to its normal position about the pin 12.

top of the rear end of the bolt When it isdesired to raise the sculfls or tines 10 from contact with the soil the lever per end of this lever; this movement of t lever extends-the coil spring 21 and simultaneously withdraws the bolt '18 frmthe path of motion of thepin 16; as a result the loaded or overweight-ed section 29 of the cam causes the cain to rotate in the directionof the arrow Fig. 1, thereby bringing the teeth 14: into contact with the surface of the soil and effecting the initial lifting lj'novement of the framework 5 and also of the scufiles or tines which lifting Inove- I'nent continues until the cam lifting device 11 occupies its. norinal position seeiiin Fig. 2', when. the skid 15' is in co'iitact'with the surface of the soil -At ,this position the pin 17 ha sc'on'ie into-co'ntact with the top face of the rear nd'o'ftlie holt iS'whiGh has in the meantime, owing. to'the release of the lever 205 returned toits normal position in the path of'the l6'an d 1'7 iiiider the influence of the c'oilspring 21'. The'dain lifting' device "11 is therefor e .now ni'ai'nt ained 'in the 'p'osition seen in F lg. of the draw: ings and will remain in that position until the bolt 18 and the cam lifting device 11.

owing to its shape and to the drawing or propelling action of the scuffler across the soil rotates the cam device 11 which initially results in a still further lifting of the frame work 5 and the sculiles or tines 10 until the cam is turned beyond its nose l1 when its motion is completed to the position seen in Fig. l by the loaded or overweighted section 22. r A

hat I claim is A scuflier or cultivator for agricultural purposes, comprising in combination, land wheels, a frame adjustably mounted to said land wheels said frame pivoting on the axles of'saidland Wheels, an inner frame disposed within the before mentioned frarne in which ispivotally'mounted an overbalanced cain, cultivating tines disposed on said frames, and spring controlled means for retaining the overbalanced cam inits raised or lowered position; substantially as set forth.

In testimony whereof, I have'signed my name to this specification.

ARTHUR ROBERT FIRKINs. 

